From c0ea23c30748845ea1009b9a908a340958e1f3a2 Mon Sep 17 00:00:00 2001
From: flan <flan@flande.re>
Date: Mon, 6 Nov 2017 22:50:44 +0100
Subject: [PATCH] Monkey patch anki at runtime

The server should work fine with /usr/share/anki now, as long as
external Anki version >= 2.1.
---
 README.md             | 10 +++------
 ankisyncd/__init__.py | 30 +++++++++++++++++++++++++++
 libanki.patch         | 48 -------------------------------------------
 3 files changed, 33 insertions(+), 55 deletions(-)
 delete mode 100644 libanki.patch

diff --git a/README.md b/README.md
index 69bc0e9..7b0125f 100644
--- a/README.md
+++ b/README.md
@@ -21,17 +21,13 @@ Installing
 
         $ pip install webob
 
-2. Patch the bundled libanki:
+2. Modify ankisyncd.conf according to your needs
 
-        $ (cd anki-bundled && git apply ../libanki.patch)
-
-3. Modify ankisyncd.conf according to your needs
-
-4. Create user:
+3. Create user:
 
         $ ./ankisyncctl.py adduser <username>
 
-5. Run ankisyncd:
+4. Run ankisyncd:
 
         $ python ./ankisyncd/sync_app.py ankisyncd.conf
 
diff --git a/ankisyncd/__init__.py b/ankisyncd/__init__.py
index 629db46..5cc6251 100644
--- a/ankisyncd/__init__.py
+++ b/ankisyncd/__init__.py
@@ -1,2 +1,32 @@
+import functools
 import sys
+
+def __mediapatch():
+    """
+    Monkey-patch Anki's MediaManager to ignore the "server" attribute.
+
+    It's needed because MediaManager's __init__(), connect() and close() are
+    close to no-ops when self.col.server is True. If self.col.server is False,
+    Syncer.usnLim() doesn't match entities that are supposed to be sent to the
+    client, thus breaking server→client deck sync.
+    """
+
+    def noserver(f):
+        @functools.wraps(f)
+        def wrapped(self, *args, **kwargs):
+            orig = self.col.server
+            self.col.server = False
+            ret = f(self, *args, **kwargs)
+            self.col.server = orig
+            return ret
+        return wrapped
+
+    from anki.media import MediaManager
+    orig_init = MediaManager.__init__
+
+    MediaManager.__init__ = functools.wraps(MediaManager.__init__)(lambda self, col, _: orig_init(self, col, False))
+    MediaManager.connect = noserver(MediaManager.connect)
+    MediaManager.close = noserver(MediaManager.close)
+
 sys.path.insert(0, "/usr/share/anki")
+__mediapatch()
diff --git a/libanki.patch b/libanki.patch
deleted file mode 100644
index 7d48e44..0000000
--- a/libanki.patch
+++ /dev/null
@@ -1,48 +0,0 @@
-diff --git a/anki/collection.py b/anki/collection.py
-index 6cec228..189c706 100644
---- a/anki/collection.py
-+++ b/anki/collection.py
-@@ -60,7 +60,7 @@ class _Collection:
-         self.server = server
-         self._lastSave = time.time()
-         self.clearUndo()
--        self.media = MediaManager(self, server)
-+        self.media = MediaManager(self)
-         self.models = ModelManager(self)
-         self.decks = DeckManager(self)
-         self.tags = TagManager(self)
-diff --git a/anki/media.py b/anki/media.py
-index 4e3ccf3..3bfdc81 100644
---- a/anki/media.py
-+++ b/anki/media.py
-@@ -26,11 +26,8 @@ class MediaManager:
-     ]
-     regexps = soundRegexps + imgRegexps
- 
--    def __init__(self, col, server):
-+    def __init__(self, col):
-         self.col = col
--        if server:
--            self._dir = None
--            return
-         # media directory
-         self._dir = re.sub("(?i)\.(anki2)$", ".media", self.col.path)
-         if not os.path.exists(self._dir):
-@@ -48,8 +45,6 @@ class MediaManager:
-         self.connect()
- 
-     def connect(self):
--        if self.col.server:
--            return
-         path = self.dir()+".db2"
-         create = not os.path.exists(path)
-         os.chdir(self._dir)
-@@ -100,8 +95,6 @@ create table meta (dirMod int, lastUsn int); insert into meta values (0, 0);
-             os.rename("../collection.media.db", npath)
- 
-     def close(self):
--        if self.col.server:
--            return
-         self.db.close()
-         self.db = None
-         # change cwd back to old location